import type { Alignment as ScrollStrategy } from '@hd-front-end/element-plus/es/components/virtual-list';
import type { SetupContext } from 'vue';
import type { treeEmits } from '../virtual-tree';
import type { CheckboxValueType } from '@hd-front-end/element-plus/es/components/checkbox';
import type { TreeData, TreeKey, TreeNode, TreeNodeData, TreeProps } from '../types';
export declare function useTree(props: TreeProps, emit: SetupContext<typeof treeEmits>['emit']): {
    tree: any;
    flattenTree: any;
    isNotEmpty: any;
    listRef: any;
    getKey: (node: TreeNodeData) => TreeKey;
    getChildren: (node: TreeNodeData) => TreeNodeData[];
    toggleExpand: (node: TreeNode) => void;
    toggleCheckbox: (node: TreeNode, isChecked: CheckboxValueType, nodeClick?: boolean, immediateUpdate?: boolean) => void;
    isChecked: (node: TreeNode) => any;
    isIndeterminate: (node: TreeNode) => any;
    isDisabled: (node: TreeNode) => boolean;
    isCurrent: (node: TreeNode) => boolean;
    isForceHiddenExpandIcon: (node: TreeNode) => boolean;
    handleNodeClick: (node: TreeNode, e: MouseEvent) => void;
    handleNodeDrop: (node: TreeNode, e: DragEvent) => void;
    handleNodeCheck: (node: TreeNode, checked: CheckboxValueType) => void;
    getCurrentNode: () => TreeNodeData | undefined;
    getCurrentKey: () => TreeKey | undefined;
    setCurrentKey: (key: TreeKey) => void;
    getCheckedKeys: (leafOnly?: boolean) => TreeKey[];
    getCheckedNodes: (leafOnly?: boolean) => TreeNodeData[];
    getHalfCheckedKeys: () => TreeKey[];
    getHalfCheckedNodes: () => TreeNodeData[];
    setChecked: (key: TreeKey, isChecked: boolean) => void;
    setCheckedKeys: (keys: TreeKey[]) => void;
    filter: (query: string) => void;
    setData: (data: TreeData) => void;
    getNode: (data: TreeKey | TreeNodeData) => any;
    expandNode: (node: TreeNode) => void;
    collapseNode: (node: TreeNode) => void;
    setExpandedKeys: (keys: TreeKey[]) => void;
    scrollToNode: (key: TreeKey, strategy?: ScrollStrategy) => void;
    scrollTo: (offset: number) => void;
};